﻿<p>A heat exchanger is a device used to provide heat transfer between non-mixing media such as plate and shell and tube heat exchangers.</p>
<p><em>IfcHeatExchanger</em> is commonly used on water-side distribution systems to recover energy from a liquid to another liquid (typically water-based), whereas <em>IfcAirToAirHeatRecovery</em> is commonly used on air-side distribution systems to recover energy from a gas to a gas (usually air).</p> 
 
<blockquote class="history">HISTORY&nbsp; New entity in IFC4</blockquote><blockquote class="note"></blockquote>
